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Effusion cell EF 40C1

EF 40C1 Effusion Cell (Knudsen Cell) is a source designed for indirect resistive heating and delivering highly constant evaporation rates. Custom insertion length 114 – 380 mm (other on request).

SKU: 126 Categories: ,

Technical data

Mounting flange DN 40CF (rotatable)
Heater W wire (tungsten)
Temperature range EF 1500 °C  (~250 °C – 1500 °C, 1600 °C for degas)
EF 1200 °C  (~250 °C – 1200 °C)
Temperature stability ± 0.1°C
Crucible type (option) PBN, Al2O3, Quartz (other materials on request)
Crucibles volume 5cc
Evaporated materials All typical materials according to crucible type
Thermocouple type EF 1500 °C  – type C (standard)
EF 1200 °C  – type K (option)
Degassing temp. 1600 °C
Type of shutter side or flip type, manual or pneumatic
Water cooling (required) water flow: > 0.5 l/min, temperature: 20 – 30 °C, max pressure: 6 bar
Insertion length min. 114mm (other on request) OD: 35 mm
Spot size Dependent on working distance
Working distance 100 – 150 mm
Bakeout temperature up to 250 °C
Working pressure < 10-5 mbar


  • Extremely stable flux rates
  • Various crucible materials
  • Highly reproducible & reliable
  • Suitable for use in any MBE system
  • Mo free construction (allows high outgassing temperatures)
  • Integral water cooling


  • Customised insertion length
  • With or without integrated manual/electro-pneumatic shutter
  • Linear shift
  • Crucibles
  • Thermocouple type C or K
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